Oil-well packer



2 Sheets-Sheet V1.

(Model.)

, J. A. DOWE-R.

OIL' WELL PAAGKBR.

Patented Nav. '8, 41881.

2 Sheets-Sheet 2. i

J A. DOWER.

oIL WELL LAGLER.

(Model.)

Patented Nov. 8,1881.I

UNITED STATES PATENT OFFICE.

JonN A, Downs, oF frrrusvinnn, PENNSYLVANIA.

c oiLfwELLPACKEa SPECIFICATION forming part of Letters Patent No.249,228, dated November 8, 1881. Application filed March 25, 1881.(Model.)

To all whom t'tmcy concern:

Be it known that- I, JOHN A. Downs, of Titusville, in the county ofCrawford and State of Pennsylvania, have invented a new and usefulImprovementin Packers for Oil or Artesian Wells, of which the followingis a specification.

My invention relates to those packers in oilwells placed around thetubing at or above the top of the sand or oil-producing rock, the ob- Ioject of the packer being to prevent the free escape of the gas aroundthe outside ofthe tubing and utilizing it to force the oil up throughthe tubing, producing whatis called flowing.7 The tubing has atelescopic joint, and with a I 5 collar upon both the upper and lower section,the packing rim or cylinder being placed between the two collarsand distended by the weight of the upper section ot' tubing pressingupon it, the packing-ring being supported by the lower 2o section, whichrests on the bottom of the well. As a matter of course, when the packeris in use the water and debris collect in the well above the packer andcreate a great pressure upon it, which has to be overcome when it isnecessary to remove the tubing from the well. The object of my inventionis to enable me to relieve the packer from that pressure by adl mittingthe iiuid to the well before the packer is started from its place. ThisI accomplishV 3o iu the manner illustrated in the drawings, in

which- Figure 1 is a section of the tubing, telescopic joints, andpacker as suspended in the well before reaching the bottom; and Fig..2 asection of the same when in place and resting on the bottom of the well.Fig. 3, Sheet 2, is a section similar to Fig. 2, but with the additionof a working barrel or pump attached to the upper section of tubing, toillustrate the method 4o by which the well, packed for iiowiug, may bepumped without removing the packer.

The same letters are used in the different [i gures to designate thesame parts. y

A represents the walls of the well; B,.the 4. 5 lower section of tubing,which rests on the bottom of the well, and which is perforated to al lowthe iiuid to enter the tubing; C, the upper section of tubing, reachingto the mouth of the well; D, a short section of slightly greaterdiameter inside than the outside diameter of C, and through which Gplays; E, a short and still larger section, int-o which D plays freely,

` and which is iirmly connected to B by the reducer F. 0n the upper endof the section E is the collar Gr, supporting the leather cup H,

which Viucloses the lower portion of and sup ports the rubber or elasticring I, which loosely surrounds the section D. On the upper end of thesection D is the collar K, which collar is made conical at `the lowerend, and is also recessed or grooved on its upper side to receive theelastic packing-ring M.

To the section of tubing Gis secured the coll lar N, having its loweredge tongued and fitted toten ter the groove onthe upper side of thecollar K and rest on the packing-ring M.

In Figs. 1 and 2 are the holes or perforations O in the tubing G, justbelow the collar N.

'I o4 the lower end of the sections C and D are secured the collars Pand R, which respectivel y engage with the lower end of the section Dand the collar G. This admits of the suspension of the whole contrivaucefrom the section C of the tubing.

The operation is as follows: As theapparatus is adjusted and loweredinto the well it is extended, as shown in Fig. l. end of the section Breaches the bottom, the section C following down, the tongue on thelower side of the collarNenters the groove on the upper side of thecollar K and rests on the packing-ring M, thus tween the sectionsdownward by the weight of the tubing,itforces the section D downward,forcing the cone on the lower side of the collar K inside thepacking-ring I, compressing the packing,and expanding it and the leathercup H against the walls ot' the well, and ei'ectually cuttiu g oi anypassage of fluid up or down. VWhen it is required to draw the tubing thesection C is rst raised, disengagiug the collar N from the collar K,audadmitting the uid from the outside of the tubing to pass down between Cand D, and also through the perforations `O into the tubing, thusfilling the well below the packingring 1 and relieving it from thepressure, when the whole can easily be drawn from the well.

Some wellsneed to be pumped occasionali y, and to do this it isnecessary to provide some escape for the gas, as well as to admitatmospheric pressure to the iiuid. Ordinarily it has been considerednecessary to remove the packer to accomplishthis. "I accomplshitin theman- When the lower forming a tightjoint bet C and D. Still pressed IOOner illustrated in Fig. 3, Sheet 2, which shows the same contrivance,except that a workingbarrel, S, is attached to the bottom end of thesection C of the tubing, and the section E is made sufticientlylong toreceive it. The openingsOin the sectionGare also omitted. When arrangedfor pumping the tubing C is raised, disengaging the collars K and N,when the gas escapes freely between the sections C and D, and the wellpumps in the ordinary manner.

As a further advantage to be gained by my construction, the verticalplay ot' the section C inside the section D, being entirely free fromcontact with the elastic packing-ring I, admits of jarring, if it isnecessary to do so, in releasing and removing the packer.v

t l make no claim for the section D telescoping with the section E, norfor the collar' G, leather cup H, rubber packing-ring I, nor the cone onthe lower part of the collar K, as all these have been previouslypatented or used.

I claim as my inventionl. In the tubing of an Artesian well, the seetionD, telescoping with the section E, thesection D having surroundingit theelastic packing-ring I, and with the collar K, in combination with thesection C, telescoping with the section D, the collar N on the section Cen gaging with the collar K on the section D, the

3. As a device by which Artesian or oil'wells packed for iiowing can bepumped without removing the packer, the upper section, C, telescopin gwith the section D, which has the packing-ringvsurrounding it, anannular space being lei't between the two sections, and with the collarN upon the section C engaging with the collar K upon the section D, so4that by slightly raising' thesection C a free passage is made for gasor fluid inside the packing-ring, suh- 'stantially as described, and forthe purposes herein set forth.

JOHN A. DOWEYR. ln presence ot` SAMUEL GRUMBiNE, A. S. RALsrroN.

the p urposes

